Date Attachable Offline Electronic Cash SchemeReport as inadecuate




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The Scientific World Journal - Volume 2014 2014, Article ID 216973, 19 pages -

Research ArticleDepartment of Computer Science and Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan

Received 15 January 2014; Accepted 26 February 2014; Published 18 May 2014

Academic Editors: T. Cao, M. Ivanovic, and F. Yu

Copyright © 2014 Chun-I Fan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electronic cash e-cash is definitely one of the most popular research topics in the e-commerce field. It is very important that e-cash be able to hold the anonymity and accuracy in order to preserve the privacy and rights of customers. There are two types of e-cash in general, which are online e-cash and offline e-cash. Both systems have their own pros and cons and they can be used to construct various applications. In this paper, we pioneer to propose a provably secure and efficient offline e-cash scheme with date attachability based on the blind signature technique, where expiration date and deposit date can be embedded in an e-cash simultaneously. With the help of expiration date, the bank can manage the huge database much more easily against unlimited growth, and the deposit date cannot be forged so that users are able to calculate the amount of interests they can receive in the future correctly. Furthermore, we offer security analysis and formal proofs for all essential properties of offline e-cash, which are anonymity control, unforgeability, conditional-traceability, and no-swindling.





Author: Chun-I Fan, Wei-Zhe Sun, and Hoi-Tung Hau

Source: https://www.hindawi.com/



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